Geologic Periods
News
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Useful Search Engines
More specific than Google:
- WorldWideScienceSearch info from global government agencies
- Ocean Data PortalOcean data and information
Geographic Names
- GEOnet Names Server (GNS)Standard spellings of foreign place names (National Geospatial-Intelligence Agency)
Maps
Maps - United States topographic maps are located in the Libraries storage facility. Policy & usage guidelines.
- The National MapIncludes mapmaking software, geospatial datasets, digital topographic maps
- US Topo Quadranglesdigital topo maps from USGS in the National Map
- MyTopo Free Online Topo Mapstopos & aerial photography
- The USGS StoreShop for all maps, world, United States, state, wall decor, historic, planetary, topographic, trail, hiking, foreign, satellite, digital
- United Nations Cartographic Section Web SiteGeneral and mission maps in PDF
- EarthExplorersatellite images, aerial photographs, and maps
- L.L. Bean stocks local quadrangles
- Libre Map ProjectFree Maps and GIS data
Guidebooks
- Geology of National Parks3D and photographic tours
Atlases
- Geologic Atlas of the United StatesPaper copies available in the Science Library, lower level.
Images
Finding Images on the Web includes copyright guidelines.
- USGS Multimedia GallerySearch for photos, video, audio
- Earth Science World Image BankAmerican Geological Institute
Fun Sites
- Earth As ArtDownloadable satellite images
